WHO WILL WIN?
Allosaurus
RAAAH
Spinosaurus
CROCO-RAAWR
THE SETUP

Allosaurus vs Spinosaurus

Allosaurus
Allosaurus
Spinosaurus
Spinosaurus

Pretend they meet in river country. Dinosaurs lived long ago. Look at the facts. Then you pick.

Would they meet?

No. Allosaurus lived in long ago. Spinosaurus lived in long ago. Pretend meeting.

This is pretend and based on facts. Real animals usually hide or leave.

Read the facts. Make your card. The page waits to pick.

Corner A

Allosaurus

Allosaurus fragilis · The Jurassic's hatchet-jaw hunter.

Allosaurus
Home
Late Jurassic plains of western North America · Lived in North America long ago
Food
Meat
Group
Lives alone
Size
Allosaurus is huge.

Hatchet-jaw hunter of the Jurassic.

Forward-set hunter eyes for its time.

Top predator of its chapter.

  • Allosaurus is huge and not very fast.
  • Sauropods, stegosaurs, and whatever the Jurassic buffet listed.
  • Morrison Formation, Late Jurassic.

Family: Other allosauroids.

Corner B

Spinosaurus

Spinosaurus aegyptiacus · A sail-backed river hunter longer than a bus.

Spinosaurus
Home
Mid-Cretaceous rivers of North Africa · Lived in Africa long ago
Food
Meat
Group
Lives alone
Size
Spinosaurus is giant.

River specialist.

A snout that may have sensed pressure in water, like a crocodile's face.

Boss of a Cretaceous river.

  • Spinosaurus is giant and not very fast.
  • Giant fish, and probably other animals that came to drink.
  • Cretaceous North Africa, about 95 million years ago — rivers and mangrove-ish coasts, not the Serengeti.

Family: Other spinosaurids like Baryonyx and Suchomimus.

TO SCALE!

SIZE & WEIGHT

Stand them next to a grown-up. Who is bigger and heavier?

1.70 m

Grown-up

2.8 m

Allosaurus to scale

Allosaurus

2.8 m

Spinosaurus to scale

Spinosaurus

Height to scale. A grown-up is 1.7 m.

Allosaurus1,700 kg

About the weight of a small car, hip-tall as a doorway, shorter than T. rex and quicker on the turn.

Spinosaurus7,000 kg

Longer than T. rex, maybe as long as a city bus, with a sail that could top a doorway.

Allosaurus

2.8 m · 1,700 kg

Allosaurus is huge. 1,700 kg.

Spinosaurus

2.8 m · 7,000 kg

Spinosaurus is giant. 7,000 kg.

Kilograms are honest. A small animal can still have a strong tool.

Who would you pick for size?

TOOLKIT!

TOOLS

Teeth, claws, horns, venom, kick — what tools do they have?

  • Weapon: Hatchet bite plus hand claws
  • Armor: Crested skull
  • Senses: Forward-set hunter eyes for its time.

Allosaurus · labeled field diagram

  • Weapon: Croc-snout plus canoe claws
  • Armor: Sail and dense bones
  • Senses: A snout that may have sensed pressure in water, like a crocodile's face.

Spinosaurus · labeled field diagram

Allosaurus2000 psi bite
Spinosaurus2000 psi bite

Allosaurus

Hatchet bite plus hand claws

Tool: hatchet bite plus hand claws. Bite: 2,000 psi.

Spinosaurus

Croc-snout plus canoe claws

Tool: croc-snout plus canoe claws. Bite: 2,000 psi.

A bite number is only one tool. Coils and kicks count too.

Whose tools would you trust?

ZOOM!

SPEED

Who gets there first?

Allosaurus
32 km/h
Spinosaurus
18 km/h
Allosaurus32 km/h
Spinosaurus18 km/h

Allosaurus

32 km/h

Allosaurus can go 32 km/h. That is not very fast.

Spinosaurus

18 km/h

Spinosaurus can go 18 km/h. That is not very fast.

A fast animal can miss. A slow one only has to connect.

Who takes the speed card?

HOME MAP!

HOME

They meet in river country. Who is built for this place?

N. AmericaS. AmericaEuropeAfricaAsiaAustraliaAntarctica
AllosaurusSpinosaurusBoth

Meeting biome: river country. Colored land is fossil range for dinosaurs and living range for zoo animals.

Allosaurus

Can handle it · Lived in North America long ago

Allosaurus's home is the late jurassic plains of western north america, not river country.

Spinosaurus

This is home · Lived in Africa long ago

Spinosaurus lives in places like river country.

No. Allosaurus lived in long ago. Spinosaurus lived in long ago. Pretend meeting.

Who gets the home point?

MENU!

FOOD

How do they get lunch?

Allosaurus
Meat · Hatchet-jaw hunter of the Jurassic.
Spinosaurus
Meat · River specialist.

Allosaurus

Meat · Hatchet-jaw hunter of the Jurassic.

Sauropods, stegosaurs, and whatever the Jurassic buffet listed.

Spinosaurus

Meat · River specialist.

Giant fish, and probably other animals that came to drink.

A plant eater is not 'safe.' Hippos and elephants still end arguments.

Whose hunting or defending helps more?

MOOD!

MOOD

Alone vs team. This rumble is one vs one.

Allosaurus
Lives alone
Spinosaurus
Lives alone
Allosaurus8 grit /10
Spinosaurus7 grit /10

Allosaurus

Lives alone

Top predator of its chapter. Grit: 8/10.

Spinosaurus

Lives alone

Boss of a Cretaceous river. Grit: 7/10.

Pack and pride animals lose their backup in a 1-v-1.

Who is better for a solo meeting?

PING!

BRAINS

Who notices first and thinks next?

Allosaurus
4/10
Spinosaurus
4/10
Allosaurus4 brains /10
Spinosaurus4 brains /10

Allosaurus

4/10

Forward-set hunter eyes for its time.

Spinosaurus

4/10

A snout that may have sensed pressure in water, like a crocodile's face.

In the wild, brains often mean leave before it starts.

Who would you score for noticing?

COUSINS!

FAMILY

Who are they related to?

Allosaurus
Allosaurus fragilis
Spinosaurus
Spinosaurus aegyptiacus

Allosaurus

Allosaurus fragilis

Other allosauroids.

Spinosaurus

Spinosaurus aegyptiacus

Other spinosaurids like Baryonyx and Suchomimus.

Cousins are clues, not a score.

Not a fight point. Who has the wilder family story?

WILD CARD!

SPECIAL

What special move did they evolve?

Allosaurus
Hatchet-Chop Lunge
Spinosaurus
River-Ambush Paddle

Allosaurus

Hatchet-Chop Lunge

Open wide, strike down, pull back.

Spinosaurus

River-Ambush Paddle

Spinosaurus was built to hunt in rivers.

A secret move here is a real wild tool, not a video-game combo.

Whose special move would change the meeting?

YOUR SCORECARD

Your scorecard

Tap who has each fact. Then tap who you think wins.

  • SIZE & WEIGHT

  • TOOLS

  • SPEED

  • HOME

  • FOOD

  • MOOD

  • BRAINS

  • SPECIAL

Your card: Allosaurus 0 · Spinosaurus 0 · still open 8

Who wins the meeting?

Keep going for the pretend meeting, then the science pick.

WHAM!

THEY MEET

Allosaurus runs first. Spinosaurus does not race. They wait in river country.

Pretend · fact-based · not a gore-fest

WHOOSH!

THE TOOLS SHOW UP

Spinosaurus is heavier. Allosaurus uses hatchet bite plus hand claws. Nobody is keeping a gore score.

Pretend · fact-based · not a gore-fest

ZING!

SPECIAL MOVES

Allosaurus tries the Hatchet-Chop Lunge. Spinosaurus tries the River-Ambush Paddle. Keep your card. The last page is next.

Pretend · fact-based · not a gore-fest

THE SCIENCE PICK

Spinosaurus!

A STOMP

You skipped a final pick. The facts still stamp a champ.

On river country, Spinosaurus wins. Spinosaurus likes river country more. Allosaurus would still win some meetings at home.

In the wild, most animals skip a fight. We still judge who the bodies and the place would favor.

Science card: Allosaurus 2 · Spinosaurus 3 · ties 3.

Your card: Allosaurus 0 · Spinosaurus 0.

The last page follows the whole animal — body plus home — not one bar chart.

Send this fight

A friend can read the same facts.

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